'''  class'''

class User():
    pass

u = User()
print(u)


class Banj():
    marjorie ='向董'

    def __init__(self,s):
        self.monitor = s

    def shangke(self):
        print("开始上课")

c1 = Banj('昭华')
c2 = Banj('浣熊')
print(c1.marjorie)
print(c2.monitor)
# 通过对象访问
c2.shangke()
# 通过类名访问，需要将该类的对象传过去
Banj.shangke(c1)